Water heater



April 21, 1925.

i.. L. BLUEMLEIN WATER HEATER Filed May 15 1924 WIM/5885s @Y E/jgwv ATTO-HNEYS lPatented Apr. 2l, 1925.

UNITED STATES PATENT OFFICE.

vLUDWIG L. BLUEMLEIN, or HARTSDALE, NEW YORK. WATER HEATER.

Application led May 13, 1924. Serial No. 713,010.

To all lwhom t may concern:

Be it known that I, LUDWIG L. BLUEM- LEIN, a. citizen of the United States," and a resident of Hartsdale, in ythe county of Westchester and State of New York, have invented a new and Improved Water Heater, of which the following is a full, clear, and exact description.

This invention relates to water heaters and has for an object to provide an improved construction wherein an electric heater is utilized as the heating means with the other parts so arranged that there is very little heat wasted. Y

Another object of the invention is to provide a water heater wherein an electric heating element is arranged interiorly of the tank of the heater so that the heating ele-` ment is substantially surrounded by water and, consequentl practically all of the heat units utilized in the desired way.

A further object of the invention is to provide an electric water heater wherein the water is heated in a coil which in turn is heated from a surrounding body ofwater maintained hot through the action of the electric heater acting more or less directly thereon. i

In the accompanying drawing Figure 1 is a side view of a heater embodying the invention, the same being shown connected with a storage tank and suitable supply and discharge pipes.

Figure 2 is a longitudinal vertical sectional view through the heater shown in igure 1.

Referring to the accompanying drawing by numerals, 1 indicates an ordinary domes-k tic boiler used as a storage tank into whichr water is supplied through pipe 2 and from which The heater 4 is arranged as shown in Figure 1 and has the lower bottom of the boiler 1 by a suitable pipe 5 and the upper part connected to pipe 3 by a pipe 6 whereby when there is no water being drawn out through l by the heater 4 will pass upwardly through pipe 6 into the upper part of the boiler 1 and thecolder water at the bottom will pass into the heater 4. will continue as long asthe heater 4 is at la higher temperature than the water in the boiler 1. It is, of course, understood that water is withdrawn through pipe part connected to the pipe 3, the water heatedl This circulation of waterwhen all or most of the water in the boiler l becomes hot, the electricity is turned ofi' from the heater 4.

.The heater 4 is shown in detail in Figure 2 wherein it will be seen that this heater is provided with a base 7 to which a container 8 is secured in any desired manner. A tube 9 is connected to base 7 in any desired manner, said tube being closed at the upper end and open at the bottom. An electric plug or wire guide 10 is screwed into the base 7 so that the lead-in-wire l1 may extend into and be connected with the heating coil 12 while the lead-out-wire 13 may extend from the upper end of coil 12 downwardly through the asbestos core 14 and finally out through member 10 to a source of supply. The core 14 is preferably of asbestos though it might be made from fire-clay or other fireproof material which is a non-conductor. In forming the core 14, the same preferably fits the tube 9 snugly and is provided with a spiral groove 15 which receives the heating coil 12 but spaces the same from the tube 9 which is copper, brass or other metal. It will be understood that the lower end of the tube 9 is connected to base 7 in such a manner as to prevent any water from passing into the interior of the tube from the interior of the container 8. Surrounding the tube 9 .is a comparatively large coiled pipe 16, which at the lower end is connected to pipe 5 and the upper end is connected to pipe 6. The diameter of the coiled pipe 16 is such that it will reach from the pipe 9 to near the container 8 while the coils are preferably spaced apart a short distance in order that the water in the container 8 may freely circulate around the various coils of pipe 16. flap valve 17 of any desired structure is provide in th pipe 16 near where it is pened at any timeA to rehevethis pressure. Also @if desind, a Smau vent hole 19 could be made in vprincipally from anyr suitable source and immediately the coils 12* will become heated. As this heat can escape only outwardly, it will pass' into the water in the container '8 and from thence into the water in pipe 16,

which water w1ll circulate as heretofore described in order to provide a supply. of water in the boiler 1. Ater the desired supply of hot water has been secured, the current is turned o but the water in the container 8 will be very hot and -so will the heating element which consists of the core 14 and the coils 12. By reason of this fact, the waterl in the boiler 1 will be maintained hot and lin case an appreciable amount is drawn oil, a limited new supply of heated or warm water will be supplied by reason of the high temperature by theheating element from the water in the container 8. I

naeaeee What I claim is:

A water heater, comprising a container adapted to be lled with water, a heating coil arranged in the container, an inlet pipe extending from the lower end of said heating coil to a point exteriorly of the container, an outlet pipe extending from the upper end of said coil to a point exteriorly of the container, and heating means arranged within said coil, said heating means enclosing a tubular memberJ closed at the y upper end and rigidly secured at the lower Y end to the bottom of the container, the same being secured in such a manner as to be water-tight, a core snugly fitting in said tubular member and extending from top to bottom, said core having a spiral groove, a heating coil arranged in said groove, substantially air-tight means for guiding leadin-wires to said coil, said core being provided with a longitudinal aperture for permitting one the coil while the other extends to the'bottom of the coil. f'

LUDWIG L; BLUEWJEEN.

wire to vextend to the top of' 

